Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants

Abstract Bi4Ti3O12 is an important lead-free ferroelectric material. Doping modification of Bi4Ti3O12 has attracted great attention to improving its performances. In this work, the effect of Sr dopants on the microstructure, dielectric, and conductivity of Bi4Ti3O12 ceramic was investigated by XRD,...

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Main Authors: Lin Wang, Mengqi Gui, Hai-Bo Jin, Xinyuan Hu, Yongjie Zhao, Naseer Muhammad Adnan, Jing-Bo Li
Format: Article
Language:English
Published: Tsinghua University Press 2018-10-01
Series:Journal of Advanced Ceramics
Subjects:
Online Access:http://link.springer.com/article/10.1007/s40145-018-0277-1
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author Lin Wang
Mengqi Gui
Hai-Bo Jin
Xinyuan Hu
Yongjie Zhao
Naseer Muhammad Adnan
Jing-Bo Li
author_facet Lin Wang
Mengqi Gui
Hai-Bo Jin
Xinyuan Hu
Yongjie Zhao
Naseer Muhammad Adnan
Jing-Bo Li
author_sort Lin Wang
collection DOAJ
description Abstract Bi4Ti3O12 is an important lead-free ferroelectric material. Doping modification of Bi4Ti3O12 has attracted great attention to improving its performances. In this work, the effect of Sr dopants on the microstructure, dielectric, and conductivity of Bi4Ti3O12 ceramic was investigated by XRD, SEM, and AC impedance spectroscopy. Substitution of 1 at% Sr for Bi decreased the grain size, suppressed the dielectric dispersion of Bi4Ti3O12 ceramic at room temperature, and resulted in different effects on the conductivity of grains and grain boundaries. The conductivity of grains in Bi4Ti3O12 ceramic was increased by the small amount of Sr dopants in the whole experimental temperature range. While the grain boundaries of 1 at% Sr-doped Bi4Ti3O12 exhibited lower conductivity than pure Bi4Ti3O12 below ~380 °C and higher conductivity above ~380 °C. The experimental phenomena were interpreted in term of compensating defects for Sr dopants.
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spelling doaj.art-259a1a079ec5430fac1d7e3cdc93a6982023-09-02T08:27:42ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082018-10-017325626510.1007/s40145-018-0277-1Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopantsLin Wang0Mengqi Gui1Hai-Bo Jin2Xinyuan Hu3Yongjie Zhao4Naseer Muhammad Adnan5Jing-Bo Li6Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of TechnologyBeijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of TechnologyBeijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of TechnologyBeijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of TechnologyBeijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of TechnologyBeijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of TechnologyBeijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of TechnologyAbstract Bi4Ti3O12 is an important lead-free ferroelectric material. Doping modification of Bi4Ti3O12 has attracted great attention to improving its performances. In this work, the effect of Sr dopants on the microstructure, dielectric, and conductivity of Bi4Ti3O12 ceramic was investigated by XRD, SEM, and AC impedance spectroscopy. Substitution of 1 at% Sr for Bi decreased the grain size, suppressed the dielectric dispersion of Bi4Ti3O12 ceramic at room temperature, and resulted in different effects on the conductivity of grains and grain boundaries. The conductivity of grains in Bi4Ti3O12 ceramic was increased by the small amount of Sr dopants in the whole experimental temperature range. While the grain boundaries of 1 at% Sr-doped Bi4Ti3O12 exhibited lower conductivity than pure Bi4Ti3O12 below ~380 °C and higher conductivity above ~380 °C. The experimental phenomena were interpreted in term of compensating defects for Sr dopants.http://link.springer.com/article/10.1007/s40145-018-0277-1dielectricimpedance analysiselectrical propertiesdefectsAurivillius compound
spellingShingle Lin Wang
Mengqi Gui
Hai-Bo Jin
Xinyuan Hu
Yongjie Zhao
Naseer Muhammad Adnan
Jing-Bo Li
Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants
Journal of Advanced Ceramics
dielectric
impedance analysis
electrical properties
defects
Aurivillius compound
title Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants
title_full Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants
title_fullStr Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants
title_full_unstemmed Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants
title_short Temperature dependent conductivity of Bi4Ti3O12 ceramics induced by Sr dopants
title_sort temperature dependent conductivity of bi4ti3o12 ceramics induced by sr dopants
topic dielectric
impedance analysis
electrical properties
defects
Aurivillius compound
url http://link.springer.com/article/10.1007/s40145-018-0277-1
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AT haibojin temperaturedependentconductivityofbi4ti3o12ceramicsinducedbysrdopants
AT xinyuanhu temperaturedependentconductivityofbi4ti3o12ceramicsinducedbysrdopants
AT yongjiezhao temperaturedependentconductivityofbi4ti3o12ceramicsinducedbysrdopants
AT naseermuhammadadnan temperaturedependentconductivityofbi4ti3o12ceramicsinducedbysrdopants
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